package com.shop.milk_tea_shop.filter;

import com.alibaba.fastjson.JSON;
import com.shop.milk_tea_shop.common.BaseContext;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.AntPathMatcher;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/**
 * @author 俞静雯
 * @Description TODO
 * @date 2024-06-26  21:39
 */
@Slf4j
//@WebFilter(filterName = "loginCheckFilter",urlPatterns = "/*")
public class LoginCheckFilter implements Filter {

    //路径匹配器支持通配符
    public static final AntPathMatcher PATH_MATCHER = new AntPathMatcher();

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
//
//        //获取本次请求的URI
//        String requestURI = request.getRequestURI();
//
//        //定义不需要处理的请求路径
//        String[] urls = new String[]{
//                "/employee/login",
//                "/employee/logout",
//                "/backend/**",
//                "/front/**"
//        };
//
//        //判断本次请求是否需要处理
//        boolean check = check(urls,requestURI);
//
//        //不需要处理直接放行
//        if (check){
//            filterChain.doFilter(request,response);
//            return;
//        }
//
//        //需要处理，已登录直接放行
//        if (request.getSession().getAttribute("employee") != null){
//            filterChain.doFilter(request,response);
//            return;
//        }
//
//        //未登录,返回登录界面,通过输出流向客户端页面响应数据
//        //NOTLOGIN在前端页面的request.js中，需要保持一致
//        response.getWriter().write(JSON.toJSONString(R.error("NOTLOGIN")));
        // TODO
        Long tid = Thread.currentThread().getId();
        log.info("线程id为：{}",tid);
        BaseContext.setCurrentId(211L);
        filterChain.doFilter(request,response);
        System.out.println(request);
        return;
    }

    /**
     * 路径匹配，检查本次请求是否需要放行
     * @param urls
     * @param requestURI
     * @return
     */
    public boolean check(String[] urls,String requestURI){
        for(String url : urls){
            Boolean match = PATH_MATCHER.match(url,requestURI);
            if (match){
                return true;
            }
        }
        return false;
    }
}
